Reversing device for engines



(No Model.) 2 sheets-sheen 1.

`D. P. KANE. EEVEESING DEVICE EUR ENGINES.

Patented Jan. 17

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NA PETERS, Hofbuwgrlpher. Wnlhinglon, D. C.

(NdModel.) 2 sheets-sheet 2Q D. P. KANE.;

RBVBRSING DEVICE FORENGINES.

No. 376,658. Patented Jan. 1 7, 1888.

' Fie 6- shownin side View.

UNITED ASTATES PATENT OFFICE.

DANIEL P. KANE, oE sT. LouIs, MIssouEI.L

REVERSING DEVICE FOR ENGINES.

SPECFICATION forming part of Letters Patent No. 376,658, dated January 17, 1888.

Application filed January 13,1887. Serial No. 224,3l1. (No model.)

.To all whom, it may concern:

Be it known thatl, DANIEL P. KANE, of the city of St. Louis, State of Missouri, have invented a certain new and useful Improvement in Reversing-Valves for Engines, of which the following is a full, clear, and exact description, reference being had tothe accompanying drawings, forming part ofthis'specification, and in Figure 1 is a longitudinal lsection at l 2, Figs. 3 and 4, except that the slide-valve is Fig.-'2 is a detail longitudinal section at l 2, showing the reversingvalve in the opposite position to that shown in Fig. l. Fig. 3 is a transverse section at 3 Y 3, Fig. 1. Fig.k 4 is a transverse section at 4 4, Fig. 1. Fig. 5 is an under perspective view of the slide-valve. Fig. 6 Vis a longitudinal section at 6 8, Fig. 7, except that the slidevalve is shown in side view. Fig. 7 is a transverse section at 7 7, Fig. 6. Fig. 8 is a transverse section at 6 8, Fig. 7, showingthe reversing-valve in the opposite direction to that shown in Fig. 6. Figs. 9 and 10 arerespectively side and top views of the reversingvalve. Figs. 1l and 12 are respectively side and top views of the valve-seat block, which is interposed between the slide-valve and the reversing-valve in the modification shown in in Figs. 6, 7, and 8.

This invention has a reversing-valve interposed between the cylinder and the slidevalve, and which is moved by a hand-lever to reverse the engine.

A is an engine-cylinder, B a piston, and -C the piston-rod. These may have substantially the usual construction. I

The construction of the device shown in Figs. l to 5, inclusive, and those featuresV into which the steam yexhausts into a steam cylinder, through which the steam enters and leaves the interior of the cylinder.

F2 Fa are similar steam-passages nearithe other end of the cylinder for the same purpose.

and F3, and the ports y g2 andF F2 being4 closed. In Fig. 2 the ports g lq'lare'in coninection with the ports F F, and the ports g ya and F F3 are closed.

The slide-valve l, besides the face fi, working steam-tight upon the reversing-valve, has a face, i', at right angles to thefacez, working uponra seat, d, at one side of the Valvechest. This seat has two steam-ports, d2 d3,

through which the exhaust-steam passes in` entering the space or passage d. The slidevalve has a central oriiice, i2, and at each side of the orifice raised parts i3, in which arev cavities4 z for the 'passage ot'exhaust-steam from the cylinder.

The slide-valve is shown in thcsame position iu Figs. l and 2; but it will be seen that the'live steam is in` communication with op posite ends of the cylinder, so as to drive the l piston in opposite directions, as indicated by `the arrows in the steam-passages and on the pistons,which are supposed to be atthe beginning of a stroke. and F are in linewith veach other and with the interior of the valve-chest, which contains live steam. The ports g3 and F3 are also in communication with each other and with the exhaust cavity or chamber fi, so that the exhaast-steam escapes by these passages.

When the reversing-Valve is in the position shown in Fig. .2, the ports g2 and F2 are in communication with each other and with the steam-chest, andl consequently the live steam enters that end of the cylinder, andthe parts g F are in communication with the exhaustchamber i* and passages d2, d, and a.

J is the steam-pipe,forming communication.

To explain, the ports g' between the steam-boiler and the steam-chest of the slide-valve,wo rked by an eccentric or equivalent device.

L is the stem of the reversing-valve, connected to a hand-lever, M, fulcrumed to a rod or bracket, N, which carries a curved guide, O, working through a niortise inthe lever. The lever is shown with a pin-hole, P, and

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the guide with'a number of pin-holes, P', in which a pin may be placed to hold the handlever in any position, such positions being shown in Figs. 1, 2, and 8, respectively, the position in Fig. 8 showing all the ports F F F2 F3 closed by the reversing-valve, which, with its operative lever, is in the central position.

In themodiiication shown in Figs. 6, 7, 8, 11, and l2 a block, R, of metal, having the same area as the interior of the steam-chest,is placed between the slidevalve and the reversing-valve and acts as a valve-seat for the slide-valve. The block R has ports i' o" r2 extending through itin line with the ports F F F" F3 in Fig. 6. The live steam is shown entering the cylinder through ports r g F and exhausting through ports F, g3, and r3. The slide-valve I in this moditication is composed of two D-valves, l, coupled together, one of them Working the ports 1' andol and the other working in connection with the ports 1' and r. The block R has exhaustportsr, which are open at top to the chambers i* of the slidevalve I. The exhaustports o" do not extend through the block R, but branch transversely at V5, said branch passages being in connection with the exhaust-passages cl2, leading into the passages d. The action ofthe reversing-valve is precisely the same in this modification as in the other already described.

I claim as my invention- 1. An engine-cylinder having two steamports at each end, aslide-valve having two cxhaust chambers or cavities, as t", a reversingplate between the slide-valve and cylinder, having but four steam-ports so arranged that but two of the cylinderports (one at each end) can have communication with the steam-chest at the same time, and two exhaust-ports situated above the reversingplate, with which the exhaust-chambers i4 communicate, substantially as set forth.

2. The'combination, with the cylinder A, the seat H, having four ports, two communieating with each end of the cylinder, and the steanrchest inclosing said seat, of the sliding reversing-plate having but four ports situated at such distances apart that but two of them can be brought into coincidence with but two of the ports in the Aseat H at the same time,

(one communicating with cach end of the cylinder,) a slide-valve placed above said plate, adapted to alternately open and close the ports in communication with the respective ends of the cylinder and having exhaustchambers which communicate with' the port whichis for the time being closed by the valve, and exhaust-ports above the reversing-plate, with which said chambers communicate, substantially as set forth.

3. The combination, with the cylinder, of the seat H, having two pairs of ports communicating with each end of the cylinder, a reversing-plate having but two pairs of ports for registering with the ports of the cylinder, said ports being so arranged that but one pair of ports in the reversing-plate can register with its corresponding pair of cylinder-ports at the same time, a slide-valve adapted to alternately cover and uncover each cylinderport and having exhaustehambers with which the port which is for the time being covered communicates, and exhaust-ports above the reversing-plate, with which the said chambers communicate, substantially as set forth.

4. The combination of the cylinder, the seat H, having a pair of ports communicating with each end ofthe cylinder, a reversingplate having two pairs of ports adapted to register alternately with the ports of the seat H, the seat d', having ports communicating with the exhaust, and the valve having the two faces fitting against said seats, and the exhaustchambers adapted to communicate with all the ports which are open for operation, substantially as set forth.

5. The combination, with the cylinder and the seat H, having a pair of ports, F F', communicating with one end thereof, and a pair of ports, Fl F3, communicating with the other end, of a reversing-plate having but four ports, g g g2 g, so arranged that when the said plate is at one position one pair of ports, g g, will be in communication with one pair of the cylinder-ports, F F, when in another position its other pair of ports, g g2, will be in communication with the other pair of cylinder-ports, F F2, and when in a third position none of said ports will communicate, as set forth.

DANIEL P. KANE.

Vitnesses:

SAML. KNIGHT, Enw. S. KNIGHT. v 

